Question

Multiply and Simiplify

Answer 1

I dont this at at all. please help

Answer 2

\[x ^{2}-4=(x+2)(x-2)\] because it is a difference of two squares.
\[x ^{2}-1=(x+1)(x-1)\] because it is also a difference of two squares. Now, simplify by crossing equations in the numerator that match with equations in the denominator.

Answer 3

Thanks!